Isn't there an issue/consideration of attaching aluminum to steel framework? The entire top of the 102 is steel to start with, right?

I read a post long ago where the Nut used steel and heated it from inside the coach during install with lots of heat lamps. Kept it hot til all the rivets were installed. He said it only got wavy in Pheonix in the summer. Just what I heard.

Thank you for your post.

John

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